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Cataracts

Condition Basics

What are cataracts?

Cataracts are a painless, cloudy area in the lens of the eye. They block the passage of light to the retina. Nerve cells in the retina detect light entering the eye and send nerve signals to the brain about what the eye sees. Because cataracts block this light, they can cause vision problems.

Cataracts are common in older adults. But changes caused by aging don't always lead to cataracts. People with a family history of cataracts may also develop them. Sometimes children are born with cataracts.

What causes them?

Aging and exposure to sunlight can cause cataracts. But eye changes caused by aging don't always lead to cataracts. Cataracts can also happen after an eye injury, as a result of eye disease, after you use certain medicines, or as a result of health problems such as diabetes.

What are the symptoms?

Many times cataracts don't cause any vision problems. Symptoms can include cloudy, fuzzy, or foggy vision. You may have trouble driving at night because of glare from car headlights. The vision loss from a cataract often happens slowly. It may never become severe.

How are they diagnosed?

Your doctor can find out if you have cataracts by checking your eyes and by asking questions about your symptoms and past health. You may need tests to make sure you have a cataract or to rule out other conditions that may be causing vision problems.

How are cataracts treated?

Surgery is the only way to remove a cataract. The surgery works well and helps people see better. But surgery may not be needed or can be delayed for months or years. Many people with cataracts get along very well with the help of eyeglasses, contact lenses, and other vision aids.

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Information about Cataracts

Current as of: July 31, 2024

Author: Ignite Healthwise, LLC Staff

Clinical Review Board
All Healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

This information does not replace the advice of a doctor. Ignite Healthwise, LLC, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Learn how we develop our content.

Information about Cataracts

Current as of: July 31, 2024

Author: Ignite Healthwise, LLC Staff

Clinical Review Board
All Healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.